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Expired Canadian patentCanada

Low temperature binder compound for refractory aggregates and refractory products of improved cold strength

CA 1332246 C · Owner: Martin Marietta Corporation · Inventors: Roloson, Thomas Edward; Stendera, James Windsor; Bridger, Keith

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

This invention relates to a phosphorouscontaining organic binder compound for refractory ceramics, a process for the preparation of the binder compound, a pre-mixed, ready-to-use refractory/binder material having a long shelf-life, a method of using the pre-mixed refractory material, and a high strength refractory body produced from the pre-mixed refractory material.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted October 4, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 4, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 5, 1989
GrantedOctober 4, 1994
Term endedOctober 4, 2011
Patent numberCA 1332246 C
Classification (IPC)C04B35/00 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedJune 5, 1989Patent grantedOct 4, 1994Term endedOct 4, 2011

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.